Update reference to wpterm.js

Author: oradwell

Diff for: demo.html

@@ -4,7 +4,7 @@
     <title>WP Term</title>
 
     <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script>
-    <script src="theme-integrations/twentythirteen/js/wpterm.js"></script>
+    <script src="theme-integrations/common/wpterm.js"></script>
     <script type="text/javascript">
         window.addEventListener('load', function() {
             wpTerm = wpTerm($('.terminal'));